Improvement in sawing-machines



2 Sheets--Sheet 1.

G. W. BELL. Sawing-Machines.

Patented Dec. 15,1874.

Attorneys.

Inventor Witnesses:

THE 5 RAP" IC CU-FHOTO u'masa 4| PARK PLACE,N.Y.

2 Sheets--Sheet 2 G. W. BELL. Sawing-Machines.

Paten'ted Dec.15,1874

No.l57,782.

Inventor:

Wimesses:

Per

Attorneys.

THE GRAPH! COPHOYO-LITNJQE 4 PARK PLACEJIX UNITED STATES PATENT QFFIGE.

GEORGE W. BELL, OF ORANGE, TEXAS.

IMPROVEMENT IN SAWING-MACHINES.

Specification forming part of Letters Patent No. 157,782, dated December15, 1874; application filed May 24, 1873.

To all whom it may concern:

Be it known that I, GEORGE W. BELL, of Orange, in the county of Orangeand State of Texas, have invented a new and Improved Sawing-Machine, ofwhich the following is a specification:

The invention will first be fully described, and then pointed out in theclaims.

Figure l is a longitudinal sectional elevation of my improved machine,taken on the line as w of Fig. 2, which is a sectional elevation takenon the line 3 y of Fig. 1. Fig. 3 is a section on the line z z of Fig.1; and Fig. 4 is a side elevation of the pulleys of the apparatus forswinging the saw back by the cord and weight, to allow the log to beshifted along.

Similar letters of reference indicate corre sponding parts.

A represents the cut-off saw, which, for a machine for cutting offshingle-bolts, I propose to hate about seventy-four inches in diameter.B represents the swingfrarne. 0 represents the sleeve-boxes for theshaft D, which drives the saw, which I propose to employ in consequenceof the great weight of the saw and swing-frame, to relieve the shaft ofit, by being permanently fixed in the frame E, so as to support theweight. F represents the push-bar which I propose to use for feeding thesaw to the log. It is jointed to the swing-frame at one end, and worksbetween the friction feed-rollers G H, one of which, G, is arranged infixed bearings, and the other in sliding bearings, which are connectedwith a lever, I, which is forced down on the feed-bar to set it inmotion by the hand, and raised to throw it off to stop the bar by aspring, K. The roller, which is in the sliding bearings, is the onewhich has the power applied, so that the other one, on which the barrests, will remain at rest when the power is off. It is turned by thebelt J from the counter-shaft L, which is turned by a belt, M, from thedriving-shaft N. O is the weighted cord for swinging the saw-frame back.It is connected to the pulley Q, and turns the eccentric pul leyP on thesame shaft, which is so connected with the swing-frame by a cord, R,that, when the feed-rollers G H are thrown out, the weight will, byturning pulley P and winding the rope R upon it, swing the saw back. Theeccentric pulley is used so that the leverage of the weight willincrease as the resistance of the swing-frame increases.

To feed the log-carriage S along from time to time as the bolts are cutoff, I have the counter-shaft T, with a large bevel-wheel, U, on oneside, and a smaller one, V, on the other side of wheels W, 011 a shaft,which gears, by the friction-wheels X, with the shaft Y, which gearswith the carriage. The shaft T is capable of shifting endwise slightly,and a shifting-lever, Z, is connected with it to throw wheel V into gearwith wheel W, when the log is to be fed up to the saw, and to throwWheel U into gear when the carriage is to be reversed.

Having thus described my invention, I claim as newand desire to secureby Letters Patent- 1. The sleeves G 0, combined with the driveshaft D inthe swing-frame B, as and for the purpose described.

2. The pulley P, arranged for increasing the leverage of the weightedcord as the resistance of the saw-frame increases, substantially asspecified.

3. The combination of lever I and spring K with power-roll H andsupportingroll G, to enable the push-bar to be operated in the mannerdescribed.

G. W. BELL.

Witnesses R. H. SMITH, S. v UHENAULT.

